The God Helmet has been mistakenly
criticized on the grounds that it's fields (from 10 to 50 milligauss) are too weak to influence the brain. This
error originates with a Swedish Researcher (Pehr Granqvist) who seems to have set up the God Helmet equipment incorrectly,
and offered several ad hoc explanations for why his attempt at
replicating the God Helmet's effects failed. These included the mistaken claim that the fields were too weak to
affect the brain. In fact, magnetic fields do pass into and through
the brain. They aren't affected by the scalp or skull, because there is no such thing as a magnetic insulator.
Nothing can block a magnetic field1|2,
including the human head. It's a law of physics.

As it happens, there are many scientific papers showing that low-intensity
magnetic fields (using less than 10 volts of electricity, and around as strong as those produced between stereo
headphones and blow dryers) have measurable effects on the brain. Some
of them are many orders of magnitude below the fields used in TMS.

The following list of studies shows that weak magnetic fields can and do influence
the brain. The list begins with TMS (for comparison), and the field strengths are ordered from strongest to weakest.
There are several units of measurement for magnetic fields, including: Tesla, Microtesla, Picotesla, Gauss and
Milligauss, to name only a few. This makes it difficult for non-specialists to compare one field to another. To
make the field strengths clear, all values are converted to the same unit (The Milligauss or mG)
and compared to the field strength used in TMS (with a percent). Links to the research papers are also given.

We can see Dr. M.A. Persinger's finding that low-intensity magnetic fields affect
the brain has been corroborated by several other researchers, and it's hoped that this page will help prevent future
misunderstandings of this point.

The conclusion is straightforward; claims that low-intensity magnetic fields can't
influence the brain aren't valid. The evidence appears below. Current induction is not the only way magnetic fields
can affect the brain. Resonance between the fields used in the stimulation and the fields within the brain (appearing
around it's electrical activity) explains some, but not necessarily all, of the results appearing below. In fact,
the mechanism
for the effects of low-intensity magnetic fields on the brain has been
known for decades.